um, no slicks? no tune? no meth? i dunno. just tell me.

 

yes I do. And as for what you don't understand, I don't know what to tell you other than what I already have. I've told you in numerous threads why it makes 14psi. One other thing that may help you to understand is that I'm cooling the air in the intake manifold pretty well so that is making the boost more efficient which will in return slightly raise the boost level.

no you don't. I replaced my injectors without removing the supercharger at all.

uh, yea, I don't understand where you are getting at with this. The only thing I can think of is that every car is different, so the trap speeds may differ slightly. Like the new ss/sc that I apply all the mods too may be slightly underpowered compared to mine because it was broke in differently than the way I did mine, Or it may have slightly more power.

 

an0malous, explain? im just curious.

 

would it have been easier to put the injectors in the intake manifold by removing the supercharger and how did you clean up the metal shavings after?

 

maybe, but it was easy enough as it was. Took me a whole 10min. And what metal shavings are you talking about?

ditto.

 

If your hitting 14psi with the stock pulley (even with the 7.5k redline), you have some serious flow blockage. You want your psi to be as low as possible and your flow to be as high as possible. More effective cooling makes the air denser, which will actually lower psi at the same flow.

Hell man, I got a 2.9" pulley and I'm only hitting ~14.3psi with a 7.2k redline. Plus I'm flowing more air then you are at that psi. Of course, that is why I'm making over 250hp @ the tire SAE Net (at only 6.4k rpms). I gotta get my 55# injectors in and do a retune, since the 42# ones are maxed.

That header and down pipe will drop your psi, which will also cut down on the IAT2's your getting. Which will let you run even more timing.

 

I can't run hardly any more timing than I already am, but I am definitely looking forward to the header and downpipe install.

as for the psi, the denser air raises your boost in the intake manifold as that is where the air is compressed and the air becomes more efficient as it is cooled. I wish I could show you the link where it is proven but if I do, I'll give away the cooling project I'm working on. So you'll just have to go with it.

The guys that are already using the cooling project I'm talking about have seen a 2psi increase because of the huge temp drops in the intake manifold.

oh, and I'm not sure about any flow blockage, but I do hope the header and downpipe helps to lower my iat's.

I'm still patiently waiting what anomalous to explain.

 

not true. More air flow is allowed when the air temp is cooler, becuase the air is denser. This is the reason you boost higher during the winter.

 

I just don't understand how you are running a 13.6 on a car with the same amount of power as mine. What are you using for tires up front, mounts, traction bars, etc? I see we trap the same but that ET makes me wonder...

 

not really... Pressure varies directly with temperature...as temp goes up, pressure goes up.

you boost higher during the winter because there is a larger variation in temp between ambiant and ACT. If you cooled your charge air more you would see less boost in any condition, but more power.

 

Denser air = more pressure, not less.

 

no it does not. Denser AMBIENT air will cause more pressure because there will be a larger variation in volume when it gets to the manifold and thus more pressure yes, but if you cool the charges more and everything else stays the same (ambient air temps) you will see less boost and more power. We are talking about act's not IAT's...unless your sensor is called IAT2 not ACT, but either way cooling the air after it is pressurized (what your cooling mods will do) will result in a drop in pressure.

 

^^^

And IAT2's is what I was talking about.

If you take two containers of the exact same size and fill them with the same mass of air (notice, I said mass and not volume), at the same temp they will have the same psi since they will both have the same mass to volume ratio of air.

If you cool one of them down more then the other (which equates to lowering your IAT2's), then the air in it will get denser. This will increase it's mass per unit of volume and result in a reduction of the psi of that container.

You never want your boost to go up in a positive displacement supercharger unless their is no other way to increase your airflow. Any "Cooling" mod that increases your psi without increasing your mass airflow is not a cooling mod. In fact, it is making your air thinner, which results in higher psi (move volume per mass of air), higher temps (higher pressure = more work), and more parasitic loss (harder to compress).

 

exactamundo.

 

the metal shavings when you drill holes in your intake manifold to put in an injector. those are the metal shavings i was talking about

 

It appears others have stumbled onto the "inconsistancy" by themselves

 

I didn't drill any holes in my manifold. My 42lb injectors were a direct swap.

The only other thing I can think of is that my IAT1 is 15 degrees and my IAT2 is 90 at the top of 3rd gear.

ok, I'm gonna spill the beans on the new cooling mod I'm working on. Only because it explains the boost increase I'm talking about, which in turn, proves you guys wrong.

 

your boost increase has nothing to do with the new mod your talking about.
youve had that boost increase for a while now (at least by your own words you have), and you dont have the new mod yet.

 

i was talking about meth injectors.... i was under the impression that you put meth injectors into your intake manifold under your sc.... i was talking about something totally different.

im actually running one more meth injector into my intake manifold on top of the on in my throttle body spacer. so i can directly cool down the intake more than before

 

I haven't done the direct injection meth yet, didn't have time before I deployed.

as for the explantion of my IAT's and the new mod, This new mod will also directly explain my boost increase. Cooling the overall air in the manifold will net denser air and make more boost. I'm finding it right now.

freakta, how's that working out for you though? What is your IAT logs?

 

I was thinking of ambient. MUH BAD YO.

 

By the way, there are many new Reviews for this new cooling mod that are showing IAT2's BELOW IAT1's and the BELOW the ambient air outside!

 

Im pretty sure hes injecting before the manifold? I could be wrong on this, but wouldnt that simulate a cooler ambient air temp entering the manifold, thus the injection before the manifold?

Im kind of lost I guess.

 

ill let you know next time i have hptuners and a dyno. i have a new part comming in this week so it will be soon enough. i know with the meth just on the tb the sc never got hot enough to burn my hand when it was doing 8 or so consecutive pull son the dyno.

the intake mani was burning hot though. so when i get my next part ill pull off the sc drill holes and put another injector and see what happens ill let you all know

 

yea, when spraying my meth, My Supercharger AND intake manifold are COOL to the touch after a couple hard pulls and I spray into the intake before the throttle body.